What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)Pilot reported unsafe nose gear, cycled gear several times declared emergency and landed. Nose gear collapsed causing minor damage to nose, gear doors and props. Found bolt backed out of lower nose gear trunnion causing gear to bind damaging nose gear down lock causing gear to collapse. No determination could be made as to why the cotter key and nut was missing from the bolt.
As the FAA filed it
(-23)PILOT REPORTED UNSAFE NOSE GEAR, CYCLED GEAR SEVERAL TIMES DECLARED EMERGENCY AND LANDED. NOSE GEAR COLLAPSED CAUSING MINOR DAMAGE TO NOSE, GEAR DOORS AND PROPS. FOUND BOLT BACKED OUT OF LOWER NOSE GEAR TRUNNION CAUSING GEAR TO BIND DAMAGING NOSE GEAR DOWN LOCK CAUSING GEAR TO COLLAPSE. NO DETERMINATION COULD BE MADE AS TO WHY THE COTTER KEY AND NUT WAS MISSING FROM THE BOLT.